Rhodamine-PEG-Thiol, MW 2,000 is a thiol PEG derivative with terminal fluorescent probe (red) for labeling. The thiol can be reacted with maleimide at pH 6.5-7.5 to form a stable thioether bond. Thiol also shows strong affinity to transition metal via formation of metal thiolate complex. Reagent grade, for research purpose.
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